Wright, Rita P. (2009), The Ancient Indus: Urbanism, Economy, and Society, Cambridge University Press, p. 133, ISBN978-0-521-57219-4, retrieved 29 September 2013 Quote: "There are a large number of settlements to the east on the continuation of the Ghaggar Plain in northwest India. … Kalibangan, Rakhigarhi, and Banawali are located here. Rakhigarhi was over 100 hectares in size."